a3f4aaf7f5df58f844ba101c8ccde145710c6f5a
[openwrt.git] / target / linux / ar71xx / files / arch / mips / ar71xx / devices.c
1 /*
2  *  Atheros AR71xx SoC platform devices
3  *
4  *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
5  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
6  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7  *
8  *  Parts of this file are based on Atheros 2.6.15 BSP
9  *  Parts of this file are based on Atheros 2.6.31 BSP
10  *
11  *  This program is free software; you can redistribute it and/or modify it
12  *  under the terms of the GNU General Public License version 2 as published
13  *  by the Free Software Foundation.
14  */
15
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
19 #include <linux/etherdevice.h>
20 #include <linux/platform_device.h>
21 #include <linux/serial_8250.h>
22
23 #include <asm/mach-ar71xx/ar71xx.h>
24
25 #include "devices.h"
26
27 unsigned char ar71xx_mac_base[ETH_ALEN] __initdata;
28
29 static struct resource ar71xx_uart_resources[] = {
30         {
31                 .start  = AR71XX_UART_BASE,
32                 .end    = AR71XX_UART_BASE + AR71XX_UART_SIZE - 1,
33                 .flags  = IORESOURCE_MEM,
34         },
35 };
36
37 #define AR71XX_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP)
38 static struct plat_serial8250_port ar71xx_uart_data[] = {
39         {
40                 .mapbase        = AR71XX_UART_BASE,
41                 .irq            = AR71XX_MISC_IRQ_UART,
42                 .flags          = AR71XX_UART_FLAGS,
43                 .iotype         = UPIO_MEM32,
44                 .regshift       = 2,
45         }, {
46                 /* terminating entry */
47         }
48 };
49
50 static struct platform_device ar71xx_uart_device = {
51         .name           = "serial8250",
52         .id             = PLAT8250_DEV_PLATFORM,
53         .resource       = ar71xx_uart_resources,
54         .num_resources  = ARRAY_SIZE(ar71xx_uart_resources),
55         .dev = {
56                 .platform_data  = ar71xx_uart_data
57         },
58 };
59
60 void __init ar71xx_add_device_uart(void)
61 {
62         switch (ar71xx_soc) {
63         case AR71XX_SOC_AR7130:
64         case AR71XX_SOC_AR7141:
65         case AR71XX_SOC_AR7161:
66         case AR71XX_SOC_AR7240:
67         case AR71XX_SOC_AR7241:
68         case AR71XX_SOC_AR7242:
69         case AR71XX_SOC_AR9130:
70         case AR71XX_SOC_AR9132:
71                 ar71xx_uart_data[0].uartclk = ar71xx_ahb_freq;
72                 break;
73
74         case AR71XX_SOC_AR9341:
75         case AR71XX_SOC_AR9342:
76         case AR71XX_SOC_AR9344:
77                 ar71xx_uart_data[0].uartclk = ar934x_ref_freq;
78                 break;
79
80         default:
81                 BUG();
82
83         }
84         platform_device_register(&ar71xx_uart_device);
85 }
86
87 static struct resource ar71xx_mdio_resources[] = {
88         {
89                 .name   = "mdio_base",
90                 .flags  = IORESOURCE_MEM,
91                 .start  = AR71XX_GE0_BASE,
92                 .end    = AR71XX_GE0_BASE + 0x200 - 1,
93         }
94 };
95
96 static struct ag71xx_mdio_platform_data ar71xx_mdio_data;
97
98 struct platform_device ar71xx_mdio_device = {
99         .name           = "ag71xx-mdio",
100         .id             = -1,
101         .resource       = ar71xx_mdio_resources,
102         .num_resources  = ARRAY_SIZE(ar71xx_mdio_resources),
103         .dev = {
104                 .platform_data = &ar71xx_mdio_data,
105         },
106 };
107
108 void __init ar71xx_add_device_mdio(u32 phy_mask)
109 {
110         switch (ar71xx_soc) {
111         case AR71XX_SOC_AR7240:
112                 ar71xx_mdio_data.is_ar7240 = 1;
113                 break;
114         case AR71XX_SOC_AR7241:
115                 ar71xx_mdio_data.is_ar7240 = 1;
116                 ar71xx_mdio_resources[0].start = AR71XX_GE1_BASE;
117                 ar71xx_mdio_resources[0].end = AR71XX_GE1_BASE + 0x200 - 1;
118                 break;
119         case AR71XX_SOC_AR7242:
120                 ar71xx_mdio_data.is_ar7240 = 1;
121                 break;
122         default:
123                 break;
124         }
125
126         ar71xx_mdio_data.phy_mask = phy_mask;
127
128         platform_device_register(&ar71xx_mdio_device);
129 }
130
131 static void ar71xx_set_pll(u32 cfg_reg, u32 pll_reg, u32 pll_val, u32 shift)
132 {
133         void __iomem *base;
134         u32 t;
135
136         base = ioremap_nocache(AR71XX_PLL_BASE, AR71XX_PLL_SIZE);
137
138         t = __raw_readl(base + cfg_reg);
139         t &= ~(3 << shift);
140         t |=  (2 << shift);
141         __raw_writel(t, base + cfg_reg);
142         udelay(100);
143
144         __raw_writel(pll_val, base + pll_reg);
145
146         t |= (3 << shift);
147         __raw_writel(t, base + cfg_reg);
148         udelay(100);
149
150         t &= ~(3 << shift);
151         __raw_writel(t, base + cfg_reg);
152         udelay(100);
153
154         printk(KERN_DEBUG "ar71xx: pll_reg %#x: %#x\n",
155                 (unsigned int)(base + pll_reg), __raw_readl(base + pll_reg));
156
157         iounmap(base);
158 }
159
160 struct ar71xx_eth_pll_data ar71xx_eth0_pll_data;
161 struct ar71xx_eth_pll_data ar71xx_eth1_pll_data;
162
163 static u32 ar71xx_get_eth_pll(unsigned int mac, int speed)
164 {
165         struct ar71xx_eth_pll_data *pll_data;
166         u32 pll_val;
167
168         switch (mac) {
169         case 0:
170                 pll_data = &ar71xx_eth0_pll_data;
171                 break;
172         case 1:
173                 pll_data = &ar71xx_eth1_pll_data;
174                 break;
175         default:
176                 BUG();
177         }
178
179         switch (speed) {
180         case SPEED_10:
181                 pll_val = pll_data->pll_10;
182                 break;
183         case SPEED_100:
184                 pll_val = pll_data->pll_100;
185                 break;
186         case SPEED_1000:
187                 pll_val = pll_data->pll_1000;
188                 break;
189         default:
190                 BUG();
191         }
192
193         return pll_val;
194 }
195
196 static void ar71xx_set_pll_ge0(int speed)
197 {
198         u32 val = ar71xx_get_eth_pll(0, speed);
199
200         ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG, AR71XX_PLL_REG_ETH0_INT_CLOCK,
201                         val, AR71XX_ETH0_PLL_SHIFT);
202 }
203
204 static void ar71xx_set_pll_ge1(int speed)
205 {
206         u32 val = ar71xx_get_eth_pll(1, speed);
207
208         ar71xx_set_pll(AR71XX_PLL_REG_SEC_CONFIG, AR71XX_PLL_REG_ETH1_INT_CLOCK,
209                          val, AR71XX_ETH1_PLL_SHIFT);
210 }
211
212 static void ar724x_set_pll_ge0(int speed)
213 {
214         /* TODO */
215 }
216
217 static void ar724x_set_pll_ge1(int speed)
218 {
219         /* TODO */
220 }
221
222 static void ar91xx_set_pll_ge0(int speed)
223 {
224         u32 val = ar71xx_get_eth_pll(0, speed);
225
226         ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH0_INT_CLOCK,
227                          val, AR91XX_ETH0_PLL_SHIFT);
228 }
229
230 static void ar91xx_set_pll_ge1(int speed)
231 {
232         u32 val = ar71xx_get_eth_pll(1, speed);
233
234         ar71xx_set_pll(AR91XX_PLL_REG_ETH_CONFIG, AR91XX_PLL_REG_ETH1_INT_CLOCK,
235                          val, AR91XX_ETH1_PLL_SHIFT);
236 }
237
238 static void ar71xx_ddr_flush_ge0(void)
239 {
240         ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE0);
241 }
242
243 static void ar71xx_ddr_flush_ge1(void)
244 {
245         ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_GE1);
246 }
247
248 static void ar724x_ddr_flush_ge0(void)
249 {
250         ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE0);
251 }
252
253 static void ar724x_ddr_flush_ge1(void)
254 {
255         ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_GE1);
256 }
257
258 static void ar91xx_ddr_flush_ge0(void)
259 {
260         ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE0);
261 }
262
263 static void ar91xx_ddr_flush_ge1(void)
264 {
265         ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE1);
266 }
267
268 static struct resource ar71xx_eth0_resources[] = {
269         {
270                 .name   = "mac_base",
271                 .flags  = IORESOURCE_MEM,
272                 .start  = AR71XX_GE0_BASE,
273                 .end    = AR71XX_GE0_BASE + 0x200 - 1,
274         }, {
275                 .name   = "mii_ctrl",
276                 .flags  = IORESOURCE_MEM,
277                 .start  = AR71XX_MII_BASE + MII_REG_MII0_CTRL,
278                 .end    = AR71XX_MII_BASE + MII_REG_MII0_CTRL + 3,
279         }, {
280                 .name   = "mac_irq",
281                 .flags  = IORESOURCE_IRQ,
282                 .start  = AR71XX_CPU_IRQ_GE0,
283                 .end    = AR71XX_CPU_IRQ_GE0,
284         },
285 };
286
287 struct ag71xx_platform_data ar71xx_eth0_data = {
288         .reset_bit      = RESET_MODULE_GE0_MAC,
289 };
290
291 struct platform_device ar71xx_eth0_device = {
292         .name           = "ag71xx",
293         .id             = 0,
294         .resource       = ar71xx_eth0_resources,
295         .num_resources  = ARRAY_SIZE(ar71xx_eth0_resources),
296         .dev = {
297                 .platform_data = &ar71xx_eth0_data,
298         },
299 };
300
301 static struct resource ar71xx_eth1_resources[] = {
302         {
303                 .name   = "mac_base",
304                 .flags  = IORESOURCE_MEM,
305                 .start  = AR71XX_GE1_BASE,
306                 .end    = AR71XX_GE1_BASE + 0x200 - 1,
307         }, {
308                 .name   = "mii_ctrl",
309                 .flags  = IORESOURCE_MEM,
310                 .start  = AR71XX_MII_BASE + MII_REG_MII1_CTRL,
311                 .end    = AR71XX_MII_BASE + MII_REG_MII1_CTRL + 3,
312         }, {
313                 .name   = "mac_irq",
314                 .flags  = IORESOURCE_IRQ,
315                 .start  = AR71XX_CPU_IRQ_GE1,
316                 .end    = AR71XX_CPU_IRQ_GE1,
317         },
318 };
319
320 struct ag71xx_platform_data ar71xx_eth1_data = {
321         .reset_bit      = RESET_MODULE_GE1_MAC,
322 };
323
324 struct platform_device ar71xx_eth1_device = {
325         .name           = "ag71xx",
326         .id             = 1,
327         .resource       = ar71xx_eth1_resources,
328         .num_resources  = ARRAY_SIZE(ar71xx_eth1_resources),
329         .dev = {
330                 .platform_data = &ar71xx_eth1_data,
331         },
332 };
333
334 #define AR71XX_PLL_VAL_1000     0x00110000
335 #define AR71XX_PLL_VAL_100      0x00001099
336 #define AR71XX_PLL_VAL_10       0x00991099
337
338 #define AR724X_PLL_VAL_1000     0x00110000
339 #define AR724X_PLL_VAL_100      0x00001099
340 #define AR724X_PLL_VAL_10       0x00991099
341
342 #define AR91XX_PLL_VAL_1000     0x1a000000
343 #define AR91XX_PLL_VAL_100      0x13000a44
344 #define AR91XX_PLL_VAL_10       0x00441099
345
346 static void __init ar71xx_init_eth_pll_data(unsigned int id)
347 {
348         struct ar71xx_eth_pll_data *pll_data;
349         u32 pll_10, pll_100, pll_1000;
350
351         switch (id) {
352         case 0:
353                 pll_data = &ar71xx_eth0_pll_data;
354                 break;
355         case 1:
356                 pll_data = &ar71xx_eth1_pll_data;
357                 break;
358         default:
359                 BUG();
360         }
361
362         switch (ar71xx_soc) {
363         case AR71XX_SOC_AR7130:
364         case AR71XX_SOC_AR7141:
365         case AR71XX_SOC_AR7161:
366                 pll_10 = AR71XX_PLL_VAL_10;
367                 pll_100 = AR71XX_PLL_VAL_100;
368                 pll_1000 = AR71XX_PLL_VAL_1000;
369                 break;
370
371         case AR71XX_SOC_AR7240:
372         case AR71XX_SOC_AR7241:
373         case AR71XX_SOC_AR7242:
374                 pll_10 = AR724X_PLL_VAL_10;
375                 pll_100 = AR724X_PLL_VAL_100;
376                 pll_1000 = AR724X_PLL_VAL_1000;
377                 break;
378
379         case AR71XX_SOC_AR9130:
380         case AR71XX_SOC_AR9132:
381                 pll_10 = AR91XX_PLL_VAL_10;
382                 pll_100 = AR91XX_PLL_VAL_100;
383                 pll_1000 = AR91XX_PLL_VAL_1000;
384                 break;
385         default:
386                 BUG();
387         }
388
389         if (!pll_data->pll_10)
390                 pll_data->pll_10 = pll_10;
391
392         if (!pll_data->pll_100)
393                 pll_data->pll_100 = pll_100;
394
395         if (!pll_data->pll_1000)
396                 pll_data->pll_1000 = pll_1000;
397 }
398
399 static int ar71xx_eth_instance __initdata;
400 void __init ar71xx_add_device_eth(unsigned int id)
401 {
402         struct platform_device *pdev;
403         struct ag71xx_platform_data *pdata;
404
405         ar71xx_init_eth_pll_data(id);
406
407         switch (id) {
408         case 0:
409                 switch (ar71xx_eth0_data.phy_if_mode) {
410                 case PHY_INTERFACE_MODE_MII:
411                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_MII;
412                         break;
413                 case PHY_INTERFACE_MODE_GMII:
414                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_GMII;
415                         break;
416                 case PHY_INTERFACE_MODE_RGMII:
417                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RGMII;
418                         break;
419                 case PHY_INTERFACE_MODE_RMII:
420                         ar71xx_eth0_data.mii_if = MII0_CTRL_IF_RMII;
421                         break;
422                 default:
423                         printk(KERN_ERR "ar71xx: invalid PHY interface mode "
424                                         "for eth0\n");
425                         return;
426                 }
427                 pdev = &ar71xx_eth0_device;
428                 break;
429         case 1:
430                 switch (ar71xx_eth1_data.phy_if_mode) {
431                 case PHY_INTERFACE_MODE_RMII:
432                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RMII;
433                         break;
434                 case PHY_INTERFACE_MODE_RGMII:
435                         ar71xx_eth1_data.mii_if = MII1_CTRL_IF_RGMII;
436                         break;
437                 default:
438                         printk(KERN_ERR "ar71xx: invalid PHY interface mode "
439                                         "for eth1\n");
440                         return;
441                 }
442                 pdev = &ar71xx_eth1_device;
443                 break;
444         default:
445                 printk(KERN_ERR "ar71xx: invalid ethernet id %d\n", id);
446                 return;
447         }
448
449         pdata = pdev->dev.platform_data;
450
451         switch (ar71xx_soc) {
452         case AR71XX_SOC_AR7130:
453                 pdata->ddr_flush = id ? ar71xx_ddr_flush_ge1
454                                       : ar71xx_ddr_flush_ge0;
455                 pdata->set_pll =  id ? ar71xx_set_pll_ge1
456                                      : ar71xx_set_pll_ge0;
457                 break;
458
459         case AR71XX_SOC_AR7141:
460         case AR71XX_SOC_AR7161:
461                 pdata->ddr_flush = id ? ar71xx_ddr_flush_ge1
462                                       : ar71xx_ddr_flush_ge0;
463                 pdata->set_pll =  id ? ar71xx_set_pll_ge1
464                                      : ar71xx_set_pll_ge0;
465                 pdata->has_gbit = 1;
466                 break;
467
468         case AR71XX_SOC_AR7241:
469         case AR71XX_SOC_AR7242:
470                 ar71xx_eth0_data.reset_bit |= AR724X_RESET_GE0_MDIO;
471                 ar71xx_eth1_data.reset_bit |= AR724X_RESET_GE1_MDIO;
472                 /* fall through */
473         case AR71XX_SOC_AR7240:
474                 pdata->ddr_flush = id ? ar724x_ddr_flush_ge1
475                                       : ar724x_ddr_flush_ge0;
476                 pdata->set_pll =  id ? ar724x_set_pll_ge1
477                                      : ar724x_set_pll_ge0;
478                 pdata->is_ar724x = 1;
479
480                 if (!pdata->fifo_cfg1)
481                         pdata->fifo_cfg1 = 0x0010ffff;
482                 if (!pdata->fifo_cfg2)
483                         pdata->fifo_cfg2 = 0x015500aa;
484                 if (!pdata->fifo_cfg3)
485                         pdata->fifo_cfg3 = 0x01f00140;
486                 break;
487
488         case AR71XX_SOC_AR9130:
489                 pdata->ddr_flush = id ? ar91xx_ddr_flush_ge1
490                                       : ar91xx_ddr_flush_ge0;
491                 pdata->set_pll =  id ? ar91xx_set_pll_ge1
492                                      : ar91xx_set_pll_ge0;
493                 pdata->is_ar91xx = 1;
494                 break;
495
496         case AR71XX_SOC_AR9132:
497                 pdata->ddr_flush = id ? ar91xx_ddr_flush_ge1
498                                       : ar91xx_ddr_flush_ge0;
499                 pdata->set_pll =  id ? ar91xx_set_pll_ge1
500                                       : ar91xx_set_pll_ge0;
501                 pdata->is_ar91xx = 1;
502                 pdata->has_gbit = 1;
503                 break;
504
505         default:
506                 BUG();
507         }
508
509         switch (pdata->phy_if_mode) {
510         case PHY_INTERFACE_MODE_GMII:
511         case PHY_INTERFACE_MODE_RGMII:
512                 if (!pdata->has_gbit) {
513                         printk(KERN_ERR "ar71xx: no gbit available on eth%d\n",
514                                         id);
515                         return;
516                 }
517                 /* fallthrough */
518         default:
519                 break;
520         }
521
522         if (!is_valid_ether_addr(pdata->mac_addr)) {
523                 random_ether_addr(pdata->mac_addr);
524                 printk(KERN_DEBUG
525                         "ar71xx: using random MAC address for eth%d\n",
526                         ar71xx_eth_instance);
527         }
528
529         if (pdata->mii_bus_dev == NULL)
530                 pdata->mii_bus_dev = &ar71xx_mdio_device.dev;
531
532         /* Reset the device */
533         ar71xx_device_stop(pdata->reset_bit);
534         mdelay(100);
535
536         ar71xx_device_start(pdata->reset_bit);
537         mdelay(100);
538
539         platform_device_register(pdev);
540         ar71xx_eth_instance++;
541 }
542
543 static struct resource ar71xx_spi_resources[] = {
544         [0] = {
545                 .start  = AR71XX_SPI_BASE,
546                 .end    = AR71XX_SPI_BASE + AR71XX_SPI_SIZE - 1,
547                 .flags  = IORESOURCE_MEM,
548         },
549 };
550
551 static struct platform_device ar71xx_spi_device = {
552         .name           = "ar71xx-spi",
553         .id             = -1,
554         .resource       = ar71xx_spi_resources,
555         .num_resources  = ARRAY_SIZE(ar71xx_spi_resources),
556 };
557
558 void __init ar71xx_add_device_spi(struct ar71xx_spi_platform_data *pdata,
559                                 struct spi_board_info const *info,
560                                 unsigned n)
561 {
562         spi_register_board_info(info, n);
563         ar71xx_spi_device.dev.platform_data = pdata;
564         platform_device_register(&ar71xx_spi_device);
565 }
566
567 void __init ar71xx_add_device_wdt(void)
568 {
569         platform_device_register_simple("ar71xx-wdt", -1, NULL, 0);
570 }
571
572 void __init ar71xx_set_mac_base(unsigned char *mac)
573 {
574         memcpy(ar71xx_mac_base, mac, ETH_ALEN);
575 }
576
577 void __init ar71xx_parse_mac_addr(char *mac_str)
578 {
579         u8 tmp[ETH_ALEN];
580         int t;
581
582         t = sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
583                         &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
584
585         if (t != ETH_ALEN)
586                 t = sscanf(mac_str, "%02hhx.%02hhx.%02hhx.%02hhx.%02hhx.%02hhx",
587                         &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5]);
588
589         if (t == ETH_ALEN)
590                 ar71xx_set_mac_base(tmp);
591         else
592                 printk(KERN_DEBUG "ar71xx: failed to parse mac address "
593                                 "\"%s\"\n", mac_str);
594 }
595
596 static int __init ar71xx_ethaddr_setup(char *str)
597 {
598         ar71xx_parse_mac_addr(str);
599         return 1;
600 }
601 __setup("ethaddr=", ar71xx_ethaddr_setup);
602
603 static int __init ar71xx_kmac_setup(char *str)
604 {
605         ar71xx_parse_mac_addr(str);
606         return 1;
607 }
608 __setup("kmac=", ar71xx_kmac_setup);
609
610 void __init ar71xx_init_mac(unsigned char *dst, const unsigned char *src,
611                             unsigned offset)
612 {
613         u32 t;
614
615         if (!is_valid_ether_addr(src)) {
616                 memset(dst, '\0', ETH_ALEN);
617                 return;
618         }
619
620         t = (((u32) src[3]) << 16) + (((u32) src[4]) << 8) + ((u32) src[5]);
621         t += offset;
622
623         dst[0] = src[0];
624         dst[1] = src[1];
625         dst[2] = src[2];
626         dst[3] = (t >> 16) & 0xff;
627         dst[4] = (t >> 8) & 0xff;
628         dst[5] = t & 0xff;
629 }